Java

Hendrik Klug is joining us to give a talk on the work he has been doing at Synthara to enable their in-memory compute IP using an MLIR-based stack. As usual there will be pizza, snacks, beer, and soft drinks after the event for participants, sponsored by Prof. Zhendong Su and the Advanced Software Technologies (AST) Lab at ETH Zurich. **Abstract:** Licensing custom accelerators as IP to chip makers comes with all sorts of challenges for the compiler. In particular, compute-in-memory hardware moves computation into the memory hierarchy, which requires a different kind of scheduling than conventional compilation pipelines usually perform. Synthara's computeRAM is an in-memory compute IP that is integrated into a wide range of targets, from smartwatches to datacenter accelerators, and each chip maker brings their own toolchain. So computeRAM has to come with a compilation pipeline flexible enough to plug into whichever platform compiler the chip maker is developing, schedule the memory hierarchy and compute capabilities exposed by the hardware, and stay maintainable as the IP evolves. MLIR's dialect and transformation model lets us integrate into the customer's compilation pipeline rather than replace it, and the same pipeline can be retargeted as the integration surface changes from one chip maker to the next. In this talk we walk through the MLIR pipeline we have built around computeRAM at Synthara: the hardware and the platforms it integrates into, the lowering pipeline to both LLVM and EmitC, and the optimizations we do for computeRAM. Throughout, we share what we learned: the good, the bad and the ugly of what's available upstream. **Location:** The event is taking place in the room G51 in the CAB building of ETH Zurich at the Zentrum campus. Enter from Universitätstrasse 6.

3 courts

AI is changing the way we develop software. Mattia’s talk takes a fresh look at **Type-Driven Development** (TDD), and how types facilitate not only the work of human developers but also **LLM reasoning**. The talk with be hands-on with code examples and open discussions Agenda: * What is Type-Driven Development * An overview of F#’s type system * How TDD facilitates human developers with AI tools * LLM Tooling with types * LLM reasoning with types * Compositionality and reasoning traces Mattia is a data scientist fighting a losing battle: replacing Python with languages featuring richer type systems. As the co-founder of Entropy42, a Zurich-based startup, he specializes in the verification of ontologies and mathematical optimization programs. There, Mattia leverages type systems and provers to sharpen the performance of specialized small language models. Mattia will use F#, but his talk does not require any prior experience with the language.

Hey Zürich, we are not slowing down! Angular Zürich is back with another evening of exciting talks exploring the future of Angular, modern developer experience, and where the framework is heading next. And for the first time ever, we’ll have three speakers sharing their insights, ideas, and real-world experiences with the community. **Talks:** *Even moar Angular skills for agentic development* *by Tomas Trajan* AI agents are quickly becoming part of the Angular development workflow - generating components, refactoring code, writing tests, and even orchestrating full features. But getting reliable results requires more than good prompts. In this talk, I’ll share the Angular patterns, architecture decisions, and tooling techniques that make agentic development actually productive at scale. You’ll see how strong typing, standalone APIs, signals, and clear project structure dramatically improve AI-generated code quality, and learn practical workflows for collaborating with coding agents without sacrificing maintainability or developer control. \-\-\- *From Typos to Type Safety — Building a Typed Router for Angular* *by Dominic Bachmann* Route enums, path constant objects, flat route trees to avoid nesting complexity — Angular developers have invented all kinds of workarounds to bring some safety to navigation. But they all share the same problem: a second source of truth that you maintain by hand. In this talk, I'll share how I built angular-typed-router, a drop-in replacement that infers every valid path directly from your route configuration. You'll see the developer experience in action — full autocomplete, compile-time validation — and learn how interface augmentation, template literal types, and recursive conditionals make it work at zero runtime cost. \-\-\- *Angular 22: The Great Simplification* *by Mateusz Halada* Angular has spent the last few releases removing complexity piece by piece - and Angular 22 takes that vision even further. In this talk, we’ll explore how the framework is evolving toward a leaner, more intuitive developer experience with simpler APIs, stronger defaults, and less boilerplate across everyday application development. You’ll see what’s new, what’s been streamlined, and how modern Angular patterns around signals, control flow, routing, and reactivity fit together into a much more cohesive mental model. By the end, you’ll understand not just the new features, but the bigger direction Angular is heading in. **Agenda** * 18:00 - 18:15 – **Intro** * 18:15 - 18:45 – **Tomas Trajan** \- Even moar Angular skills for agentic development * 18:50 - 19:30 **Dominic Bachmann** \- From Typos to Type Safety \- Building a Typed Router for Angular * 19:35 - 20:05 – **Mateusz Halada** \- Angular 22: The Great Simplification * 20:05 - 21:00 – **Networking**

Spring has arrived 🌱🌸 What better idea than having your own takeaway cup — ready for an iced coffee, a matcha, a tea, or a fresh juice. The kind of cup you grab before heading out for a walk by the river, sitting by the lake, or meeting friends for a picnic in the sun. ‍ In this workshop, you’ll **create your own ceramic takeaway cup**, something unique to carry your favourite drinks through the season. ‍ **📍 Location:** Dörflistrasse 50, 8050 Zürich **🗓 Date & Time:** June 17 (Wednesday), 18h-20h **⏱ Duration:** 2 hours **💰 Price:** 70 CHF per participant ‍ **What You’ll Learn:** \- Beginner\-friendly hand\-building ceramic techniques to shape your own to go cup from scratch \- Decorating and painting your pieces with your own personal style ‍ **What’s Included:** \- All clay and materials provided \- Kiln firing and glazing to make your piece durable and food\-safe **All levels welcome** — from complete beginners to clay pros. ✨ Drink from something you created yourself 📧 Email us at **[ceramics.wheels@gmail.com](https://ceramicsonwheels.ch/post/candle-and-incense-holders-workshop#)** if you have any questions or to reserve your spot! ***Please note that your spot is only fully secured once payment has been completed, either via TWINT or through Eventfrog. We do not process payments through Meetup.***

**Start your day with something you made yourself 🥄🧘‍♀️** Join our ceramic workshop and create your own bowl — perfect for yogurt mornings, açaí rituals, colorful salads, or your favorite poké. Upgrade your daily routine with something unique. A bowl you shaped with your own hands, made just for you. **📍 Location:** Dörflistrasse 50, 8050 Zürich **🗓 Date & Time:** Wednesday, June 17th (18h-20h) **⏱ Duration:** 2 hours **💰 Price:** 70 CHF per participant **What You’ll Learn:** * Step-by-step guidance to create your pieces (2 small pieces or 1 large) * Decorating and painting your pieces with your own personal style * Beginner-friendly techniques — no experience needed!‍ **What’s Included:** * All clay, paint, and working tools provided * Kiln firing and glazing to make your piece durable and food-safe **All levels welcome** — from complete beginners to clay pros. ✨ Eat from something you created yourself 📧 Email us at **[ceramics.wheels@gmail.com](https://ceramicsonwheels.ch/post/candle-and-incense-holders-workshop#)** if you have any questions! ***Please note that your spot is only fully secured once payment has been completed, either via TWINT or through Eventfrog. We do not process payments through Meetup.***

FOR WHOM Those who attended Session 1 or anyone new who wants to experience a deeper layer of the inner-clearing practice. DESCRIPTION Returning to the theme of inner clarity, Silent Mind Declutter 2 (静心整理2) builds on the foundation of the first session and takes the practice a step further — working with deeper emotional patterns, habitual thought loops, and the stories we carry. Held in a spacious location in Wollerau, this session combines silent sitting, guided breath meditation, and light contemplative inquiry. You will be gently guided to observe the mind without judgement, identify what no longer serves you, and cultivate a sense of internal spaciousness. This session can be attended independently — no prior attendance required. WHAT TO EXPECT Guided silent sitting and breath-based meditation Contemplative self-inquiry practices Calm, supportive group environment Comfortable seating provided; wear loose, comfortable clothing

Be open for change and come into your full potential! Get unstuck with Kundalini Yoga, Pranayam and Meditation and learn the tools to explore your inner riches. Let go of mental trash, find courage and lightness, and bring a sparkling joyfulness into your everyday-life as you gradually connect with your innermost sensitive being. You will leave this class energetically re-charged, with a calm mind, your spirits lifted and a soothed heart. Looking forward to see you! Sat Nam and blessings of grace, Nava No previous knowledge required. This class is for anyone interested in kundalini yoga and meditation, newcomers and seasoned practitioners alike. Regular class: 35.- / 10-class multiple: 320.- (valid 4 months) Students / Unemployed / Kulturlegi: 25.- / 10-class multiple: 225.- (valid 4 months) Visit also: www.yoga2be.ch // Meetup: Yoga2Be - Movement, Energy, Nutrition for Body & Mind http://meetu.ps/c/3DljJ/8Hl5s/a

Welcome to the Open Level Play Session. This session takes place every Saturday from 12:15 to 13:45 at the Yonex Badminton Hall Hardbrücke. The number of players on the waitlist one week in advance determines the number of courts booked. If you are on the waitlist but can no longer attend, please remove yourself as early as possible. Open to players of all skill levels. This session is for doubles with a relaxed and social focus. Ideal for casual play, improvement and meeting new players. Payment can be made via TWINT after the session.

Hallo liebe Java User Group Mitglieder! Diesmal haben wir zwei Bonner Kollegen zu Gast: * Martin Stoller: **Backend-Performance in Hochlast-Systemen: Lösungsansätze aus dem Data Engineering** * Andreas Monschau: **Zehn goldene Regeln, um dein Softwareprojekt zuverlässig zu ruinieren** Wir freuen uns euch zu sehen (virtuell oder vor Ort). Dank an [codecentric](https://www.codecentric.de/standorte/nuernberg) für Location, Bier und Pizza! ================= Viele Hochlast-Systeme beginnen als kleine, unscheinbare Prototypen - gebaut mit bewährten Mitteln wie relationalen Datenbanken, objektorientierter Business-Logik und klassischen Request-Response-Architekturen. Doch was passiert, wenn diese Systeme plötzlich nicht mehr Tausende, sondern Millionen von Requests bedienen oder Terabytes an Daten verarbeiten müssen? In der Praxis zeigt sich häufig: Klassische Optimierungen wie Caching, horizontale Skalierung oder effizientere Algorithmen stoßen irgendwann an ihre Grenzen, weil sie innerhalb desselben Paradigmas bleiben. Dieser Vortrag zeigt, warum echte Skalierbarkeit oft ein Umdenken erfordert. Anhand eines durchgehenden Praxisbeispiels wird schrittweise demonstriert, wie sich ein System von einer latenzoptimierten Request-Response-Architektur hin zu einem durchsatzoptimierten, analytischen System entwickelt. Dabei werden zentrale Konzepte aus dem Data Engineering greifbar gemacht - darunter Precomputation, Batch Processing, deklarative Verarbeitung und Denormalisierung - und in den Kontext klassischer Backend-Entwicklung eingeordnet. Die Teilnehmenden lernen, typische Grenzen traditioneller Architekturen zu erkennen und erhalten ein alternatives Denkmodell, um High-Throughput-Systeme gezielt und nachhaltig zu skalieren. ================= Softwareprojekte sind chaotisch, anstrengend und voller Überraschungen. Und ganz ehrlich: So soll es auch bleiben. Ordnung würde ja nur den Spaß verderben. Trotzdem gibt es immer wieder Menschen, die glauben, man könnte Projekte wirklich zu Erfolg führen… unglaublich, oder? Damit dir so etwas nicht passiert, zeige ich dir in diesem Vortrag, wie du ein Softwareprojekt in 10 einfachen Schritten zuverlässig an die Wand fährst. Die „goldenen Anti-Pattern für maximalen Projektschaden“ entstammen jedoch nicht meiner Fantasie, nein, sie werden in der Realität täglich mit beeindruckender Konsequenz praktiziert. Und das Beste: Sie wirken nachhaltig. Manche dieser Muster entfalten ihre volle Zerstörungskraft erst Monate später. Nachdem du alle Regeln kennengelernt hast, kannst du selbst entscheiden: Möchtest du sie weiterhin anwenden, oder vielleicht doch etwas verändern? Solltest du allerdings inspiriert sein, eines dieser Anti-Pattern künftig noch konsequenter zu leben… dann sollten wir uns nach dem Talk dringend unterhalten. ================= Dein Vortrag bei der Java Usergroup Nürnberg! Hast du dich in letzter Zeit in deinem Projekt oder privat mit einem interessanten Thema beschäftigt? Vermutlich ist das nicht nur für dich selbst interessant! Hast du Lust, selber einmal einen Vortrag bei der Java-Usergroup Nürnberg zu halten? Wir sind nicht nur auf Java-Themen fokussiert, sondern beschäftigen uns gern mit und um alles über Software Entwicklung und IT. Wir wollen bei der JUG nicht nur bekannten Speaker\*innen eine Plattform geben und die neuesten State-of-the-Art Technologien vorstellen. Wir freuen uns auch besonders, wenn wir Themen aus unserem technologischen (Arbeits-)alltag Raum geben zu können. Melde dich gerne bei uns, wenn du dazu Lust hast, wir geben wenn gewünscht gerne auch Hilfestellung bei der Vorbereitung!

Welcome to the Open Level Play Session. This session takes place every Saturday from 10:45 to 12:15 at the Yonex Badminton Hall Hardbrücke. The number of players on the waitlist one week in advance determines the number of courts booked. If you are on the waitlist but can no longer attend, please remove yourself as early as possible. Open to players of all skill levels. This session is for doubles with a relaxed and social focus. Ideal for casual play, improvement and meeting new players. Payment can be made via TWINT after the session.

Welcome to the Competitive Play Session. This session takes place every Saturday from 10:45 to 12:15 at the Yonex Badminton Hall Hardbrücke. The number of players on the waitlist one week in advance determines the number of courts booked. If you are on the waitlist but can no longer attend, please remove yourself as early as possible. Players are accepted into the session based on skill suitability. This session is for experienced players looking for quality games. Play is focused on doubles with a competitive mindset and consistent rallies. You should be comfortable smashing, return smashes and keeping up a moderate tempo throughout the session. New players and those who are new to badminton are welcome to join the PM Session (Open Level Play). Payment can be made via TWINT after the session.

We are currently playing in a regular group of 12 players at higher intermediate/advanced level. Your registrations here will first be on the waiting list and when confirmed, payment is to be made by twint to secure your spot for participation. There is a charge of Chf 22 per person. That is inclusive of feather shuttles. Place of event - Schumacher Sport Center, Am Stadtrand 46, Dübendorf. Court no. 10, 11 & 12

**詠春拳良伴 Ving Tsun Kuen Companion \*** [https://kwoon.ch](https://kwoon.ch) [SayWhatIType ](https://apps.apple.com/us/app/saywhatitype-universal/id6745560688)\* **ABOUT** Learn Wing Chun (Ving Tsun) Kuen in Switzerland like in HK for all ages! Practical, modern day Kung Fu through authentic Wing Chun Kuen for women, men and family with kids here in Zurich & surrounding areas. Be part of our family and work together in small focused groups today! 中文\(母語\) \| Wir sprechen Deutsch \| On parle français \| Se habla castellano \| Se parla un po' italiano Weekend sessions [www.meetup.com/zurich-wing-chun-kung-fu/events/](www.meetup.com/zurich-wing-chun-kung-fu/events/) Weekday trainings [www.meetup.com/Swiss-Wing-Chun-Kung-Fu-Self-Defence/events/](www.meetup.com/Swiss-Wing-Chun-Kung-Fu-Self-Defence/events/) \* mobile APP Google Android APK and Apple iOS (Mac OS) **HOW TO FIND US** Contact us via Meetup message for current training location. Note that the number of online meetup RSVP does not necessarily correspond to actual attendees on event date. **IMPORTANT - READ ME !** * carefully review and agree to the T&C below before RSVP * fee-based “Discovery” session for new beginners or refreshers i.e. no free trial session or lesson is available (see T&C below) * your follow-up written RSVP confirmation to accept the T&C or in the event of cancellation must be made no later than 24 hours prior to the event date/time * your eligibility to participate automatically becomes void if (a) we do not receive your confirmation or cancellation by the stated deadline (b) you are not punctual (+/- 15 minutes) or do not show up after RSVP * no meetup message reminder or notification will be sent **TERMS & CONDITIONS (T&C)** * participation fully at own risk and responsibility (Disclaimer) * kids 6 years or older (or as a family parent + kid) * adhere to relevant health, safety and security guidelines * suitable self equipped personal sports attire/gear (non black sole for indoor practice) * participants with relevant skill levels may join with a nominal fee (write for details) * flexible packages (write for details) * eligibility to join our private club is at the sole discretion of our team * the first 1-to-1, small private group session or the "Discovery" session for beginners and refreshers is offered at a special rate of CHF 45/- COD per participant (CHF 55/- weekends & public holidays) \*\* * any other expenses to be separately agreed and paid by participants e.g. transport to other locations outside of Zürich * regular 1-on-1 private or group training available on request (practically any location in the world) * subject to change without any notice \*\* about 45min+ intensive; may credit as future session time (limited) \-\-\-\-\- Feel free to contact us should you have any questions or inquiries (via meetup message) **DISCLAIMER** The organiser assumes no responsibility or liability, in whole or in part, for any loss, injury or damage incurred to any other person, or to its or their property. . ::: Keinerlei wird Unfall- und Schadenshaftung übernommen! :::

**Latest Dojo Location!** **Knotty Pine Brewing** 1765 W 3rd Ave, Columbus, OH 43212 We're going to try a new dojo location for a few weeks and see how it works Dojos are informal Python group study sessions where everyone interested in Python gathers to learn about Python, help others with Python, or just hang out. Everyone is welcome from Python beginners to experts. Bringing a laptop is encouraged (we'll have extension cords and power strips). If there's something you want to learn leave a comment on this invite so we can plan ahead. We're looking for speakers for our Monthly Meetups! Fill out the form if you are interested in presenting to the Python Community. https://forms.gle/ehSfUAC2WgR34Crq9

WQC has weekly Thursday night social nights at the Westerville Java Central. Come and grab a coffee and connect with the community: low stakes, chill environment, and tasty drinks. No registration is required; come as you are.

**Important time note:** Please plan on arriving between 5:30 and 6:00 as the elevators lock after 6 and you'll need to message us and we'll need to come get you. The building address is 4450 Bridge Park The entrance is 6620 Mooney St, Suite 400 You will need to scan your ID at the door to get a visitor badge. **Abstract** *Customize the IDE: Building Extensions for Visual Studio Code* Visual Studio Code is one of the most widely used development environments today, and much of its flexibility comes from its extension ecosystem. Extensions allow developers to customize the editor with new features, integrations, and workflow improvements tailored to their needs. In this session, we’ll cover what extensions are and the different types available, including full extensions written in TypeScript or JavaScript, along with lighter-weight extensions such as color themes, language packs, language support, code snippets, and keymaps. We’ll also look at practical reasons a developer might create an extension, from automating repetitive tasks to adding custom tooling. The session includes a hands-on walkthrough of creating a new extension, testing it locally, and understanding the basic project structure. We’ll close with a brief overview of how extensions are packaged and published to the Visual Studio Marketplace and other distribution options. **YouTube Link** TBD

**Improving Office in Franklinton** Physical location: Improving Office 330 Rush Alley Suite #150 Columbus, OH 43215 Schedule: 6:00 p.m.: Socialize, eat, and drink. Improving will be providing pizza and beverages. 6:30 to 8:00 pm. Main meeting and presentation(s). Topic: This month Chris Pazsint will be talking about Agentic Coding. How does one use CLI Based Agents, and Agentic IDEs such as Cursor, Kiro, Antigravity? How to include agentic coding plugins for IDEs you already love such as Visual Studio Code. We meet on the last Monday of each Month. Presentations are given by members and friends of this group. If you would like to do a presentation (small or large) on a python topic, please contact Central OH Python at centralohpython@gmail.com

Elide is like Bun for Java and Kotlin: an all-in-one native toolchain, with drop in support for Java Kotlin. Drop in, with up to 20x faster compiles, and 100x faster code formatting. Elide leverages GraalVM for a new development modality: native-first tooling with fast startup and shutdown. Install Maven dependencies, format and compile Java and Kotlin, assemble Docker containers and JARs, all in one binary, and all in the time it takes Gradle to get its boots on in the morning. **Note**: This is a hybrid in-person/online event. Food and social for those in the OCI training room starts at 6:00pm. Presentation starts at 6:30pm for those online and in the training room.

We're going to GameArena! We'll be in-person at the GameArena Gateway for our monthly COGG Prototype and Play event. Come to play and showcase your games! We're back in the upper levels of the catwalk area. It'll be packed with lots of camaraderie playing your game(s) and other's games on the 2nd floor. Light snacks and water provided but you can buy food and drinks at the bar (alcoholic drink ID required). [www.game-arena.co](http://www.game-arena.co/) **Attendees:** Don't have a game to show? Not a problem! All are welcomed and invited from all ages and backgrounds. The more we can have to play test our games is all the better! **Developers:** Do you have a game that you would like to get critical feedback on? Would you like an excuse to work on a game with other talented artists, programmers, musicians, designers, and writers? Digital, table-top, non-experienced developers, and the like are welcomed! We'll provide signage for your game to help others learn more about your work. Wifi, outlets, tables, and seats (though standing tables also) are available. Come to the Prototype and Play workshop to collaborate and meet local game developers for an evening of epic and raw game play fun! Play works-in-progress, show off your own game, work with others to add polish to a game, or even lend your talents to other fellow developers. For this event, light snacks from the bar and water will be provided! Though you can purchase you own if you like at the bar: [https://www.game-arena.co/menu](https://www.game-arena.co/menu) Can use South Garage at the Gateway with a $5 voucher on your way out. 75 E 11th Ave, Columbus, OH 43201 [https://maps.app.goo.gl/UwgveUYG37Jy7RtS9](https://maps.app.goo.gl/UwgveUYG37Jy7RtS9) If you have any questions or comments, as always, feel free to reach out to us at [info@thecogg.com!](http://info@thecogg.com!/)